Several people were injured as violent protests broke out in Srinagar Wednesday after a teenager succumbed to injuries sustained in alleged police assault, taking the toll in the ongoing unrest in the Kashmir Valley to 64.A mob attacked security forces with stones and bricks in Soura area of Srinagar city following the death of 18-year-old Omar Qayoom Bhat in the Sher-e-Kashmir Medical Institute Soura (SKIMS) after battling for life for three days.Bhat was admitted in the hospital Monday "with lung contusion and respiratory syndrome", said Syed Amin Tabish, medical superintendent of SKIMS.Doctors had put Bhat on life support system in the hospital's cardiac intensive care unit where he succumbed to injuries Wednesday morning.Relatives and locals alleged security forces had severely beaten the boy during clashes in Soura area last Friday. Bhat belonged to Anchar locality adjacent to Soura, where he was buried this evening.An agitated mob also torched a police troop carrier and a private vehicle in Soura after attacking a guard post there. Police intervened with batons, tear smoke shells and also fired pellets using Pump Action Guns (PAG).